Thread (43 messages) 43 messages, 5 authors, 2021-02-10
STALE1944d REVIEWED: 3 (0M)

[PATCH AUTOSEL 5.10 23/36] drm/amd/display: Fix dc_sink kref count in emulated_link_detect

From: Sasha Levin <sashal@kernel.org>
Date: 2021-02-08 19:24:11
Also in: amd-gfx, dri-devel, lkml
Subsystem: amd display core, drm drivers, radeon and amdgpu drm drivers, the rest · Maintainers: Harry Wentland, Leo Li, David Airlie, Simona Vetter, Alex Deucher, Christian König, Linus Torvalds

From: Victor Lu <redacted>

[ Upstream commit 3ddc818d9bb877c64f5c649beab97af86c403702 ]

[why]
prev_sink is not used anywhere else in the function and the reference to
it from dc_link is replaced with a new dc_sink.

[how]
Change dc_sink_retain(prev_sink) to dc_sink_release(prev_sink).

Signed-off-by: Victor Lu <redacted>
Reviewed-by: Nicholas Kazlauskas <redacted>
Acked-by: Anson Jacob <redacted>
Tested-by: Daniel Wheeler <redacted>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 0f7749e9424d4..f1fea71a7073c 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1792,8 +1792,8 @@ static void emulated_link_detect(struct dc_link *link)
 	link->type = dc_connection_none;
 	prev_sink = link->local_sink;
 
-	if (prev_sink != NULL)
-		dc_sink_retain(prev_sink);
+	if (prev_sink)
+		dc_sink_release(prev_sink);
 
 	switch (link->connector_signal) {
 	case SIGNAL_TYPE_HDMI_TYPE_A: {
-- 
2.27.0
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